use std::io;
use rand::Rng;
fn main() {
    let a= rand::thread_rng().gen_range(1..101);
    println!("rand numbet {}",a);

    let mut guess_number=String::new();
    io::stdin().read_line(&mut guess_number)
    .expect("error !");
    
    println!("guess_number is {}",guess_number);
}
